C Array Questions and Answers
Arrays in C language form the foundation of data storage and manipulation. They store multiple values of the same type under a single variable name, allowing efficient data handling. Programming questions and answers related to arrays frequently appear in campus placement exams and coding interviews by TCS, Wipro, and Capgemini. This topic includes C array questions with answers covering array declaration, initialization, multidimensional arrays, and pointer relations. Practicing these problems will enhance your understanding of indexing, memory usage, and algorithm design for real-world applications.
C Array
Showing 10 of
108 questions
81. In terms of code generation, how do the tweo definitions of buf, both presented below, differ? char buf [ ]="Hellow World"; char *buf="Hello world!";
- the first definition certainly allows the contents of but to be safely modified at runtime, the second definition does not.
- the first definition is not suitable for usage as an argument to a function call; the second definition is.
- the first definition is not legal because it does not indicate thesize of the array to be allocated. the second definition is legal.
- The first definition does not allocate enoughl space for a terminating Null character, not does it append one; the seond definition does.
82. Whch of the following is equivalent to *(a[3]+2).
- a [3] [2]
- ((*a+3)+2)
- (*(a+3)+2)
- None of the above
83. Which of the following creates a single dimensional array equivalent to the dynamic array ? char x[30];
- char *const x=(char *const) malloc (30);
- char *x=(char *) malloc (30);
- char *x=(const char*) malloc (30);
- None of the above
84. What is the length of the following string ? char x[ ] ="8, 9, 10, 11, 12, ";
- 5
- 6
- 8
- 12
85. Find the output void main () { int x[ ]={1, 2, 3, 4, 5, 6}; int *p,q,r; p=x+3; q=5, r=4; printf("%d", p[(q>r)-2]); }
- 4
- 3
- 5
- Compilation error
86. Find the output. void main () { int p[4]={15, 25, 35, 45}, *a; p[-1]=5; a=p; printf("%d", -1[++a]); }
- -35
- 25
- -5
- Compilation error
87. Find out the output void main ( ) { int a[ ]={1, 2, 3, 4, 5, 6}; int *ptr=a+2; printf("%d %d', --*ptr+1, 1+*--ptr); }
- 13
- 12
- 23
- Compilation error
88. Find the output void main () { char a[ ] = {'1', '2', '3', 0, '1', '2', '3' }; printf(a); }
- 123
- 123123
- 1230123
- Compilation error
89. Find the output int one_d[ ]={1, 2, 3}; void main ( ) { int *ptr; ptr=one_d; ptr+=-3&2&&-5; ptintf ("%d", *ptr); }
- 1
- 2
- 3
- Compilation error
90. Find the output { void main ( ) { char a[5]="abcd"; int b = 3; printf("%c\n", a[b]); printf("%c", ((char*)b) [(int)a]); }
- Compilation Error
- d d
- d Garbage value
- None of these